The Lipid Fraction of Organic Matter in Chestnut Soils and Quasi-Gley Chernozems in the Western Transbaikal Region

Abstract

The lipid fraction of organic matter was first characterized for chestnut soils and quasi-gley chernozems of the Western Transbaikal region. ¹³С NMR spectra were acquired of lipid formulations of chestnut soils on the Selenga Highlands and quasi-gley chernozems in the south of the Vitim Plateau. Analysis of the spectra was performed, specifically, labeling of signals of ethoxy groups, phenol derivatives, and alkene fragments; indication of the chemical shift ranges characteristic of particular types of carbon nuclei; and comparison of the contents of various types of structural elements between the studied samples. The relationship was determined between the lipid components and hydromorphism of soils in quasi-gley chernozems. An increase in the degree of hydromorphism is presumed to lead to an increase in a share of unsaturated components.